"I'm assuming she was taken, because she's not the kind of kid who would run away from home," Moss said.

Jessica's father, Jeremiah Bryant, lives with Moss in a Kansas City suburb. Moss said they learned Jessica was missing when police showed up at their doorstep.

"They came and they asked if they could check my house, and I said, 'Sure' because I didn't have anything to hide," Moss said.

Police reported that Jessica's parents were in a custody battle.

"When she was here six weeks ago, we talked about next summer and maybe she could come stay a couple of weeks," Moss said.

Moss said her grandson and Jessica's mother have a good relationship.

"He's upset because of the act that people on the Internet are assuming he's guilty," Moss said. "He's really angry and doesn't want to talk. But I want to talk because I want everyone to know we want Jessica back."

KMBC's Haley Harrison reported the police have not identified any persons of interest, but they are not ruling anyone out.